Model test apparatus for tunneling

The present invention discloses a tunnel excavation model test apparatus, comprising a mold box, the tunnel structure model, and means excavation loading means, the mold box by a trough and plexiglass plates, secured through the groove to the plexiglass plate the slot opening side, the box is filled with a model test model filler; tunnel structure model using the rosin material in a similar ratio of the actual size of the tunnel cross section obtained by casting, is provided in the middle of the mold box; the loading device consists of reaction beams, hydraulic jacks and the steel sheet composition, the model is provided at the top of the tank; the excavation device consists of a heating wire, the wire and a power switch composed of a heating wire disposed on the tunnel structure model. Tunnel excavation process simulation of the invention facilitate the development of shapes and sizes, excavation boundaries and predesigned geometric boundaries can be a good fit, simulate tunnel excavation project more in line with the actual, simple structure, easy to operate, cost low, easy application.